1420247242 has 16 divisors (see below), whose sum is σ = 2157832512. Its totient is φ = 701026560.

The previous prime is 1420247239. The next prime is 1420247243. The reversal of 1420247242 is 2427420241.

It is a self number, because there is not a number n which added to its sum of digits gives 1420247242.

It is not an unprimeable number, because it can be changed into a prime (1420247243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36523 + ... + 64609.

It is an arithmetic number, because the mean of its divisors is an integer number (134864532).

Almost surely, 2^1420247242 is an apocalyptic number.

1420247242 is a deficient number, since it is larger than the sum of its proper divisors (737585270).

1420247242 is a wasteful number, since it uses less digits than its factorization.

1420247242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28413.

The product of its (nonzero) digits is 7168, while the sum is 28.

The square root of 1420247242 is about 37686.1677807654. The cubic root of 1420247242 is about 1124.0560950420.

Adding to 1420247242 its reverse (2427420241), we get a palindrome (3847667483).

The spelling of 1420247242 in words is "one billion, four hundred twenty million, two hundred forty-seven thousand, two hundred forty-two".